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Expander.Expanded Event

.NET Framework 4.5

[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]

Occurs when the content window of an Expander control opens to display both its header and content.

Namespace: System.Windows.Controls
Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation

Syntax

C++

public event RoutedEventHandler Expanded

XAML Attribute Usage

<object Expanded="RoutedEventHandler" .../>

Routed Event Information

Identifier field	ExpandedEvent
Routing strategy	Bubbling
Delegate	RoutedEventHandler

Remarks

The Expanded event occurs when the IsExpanded property changes from false to true.

Examples

The following example shows how to specify the event handler for the Expanded event.


yourExpander.Expanded += new RoutedEventHandler(expanderHasExpanded);

XAML


<Expander Name ="yourExpander" Expanded="expanderHasExpanded" 
          Header ="expanderTitle" Content="expanderContent"/>

The following example shows how to define the event handler.


private void expanderHasExpanded(object sender, RoutedEventArgs args)
{
    //Do something when the Expander control expands
}

Version Information

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 8 Consumer Preview, Windows Server 8 Beta, Windows 7, Windows Server 2008 SP2, Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

Expander Class

System.Windows.Controls Namespace

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